/*
 * Copyright (C) 2011 by Anton Novikau
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.googlecode.gplaces.core;

import android.app.Activity;
import android.util.Log;

/**
 * {@link SafeAsyncTask} implementation that shows progress dialog while the
 * task executing.
 * 
 * @see SafeAsyncTask
 * @author Anton Novikov
 */
public abstract class DialogBasedAsyncTask<Params, Progress, Result> extends
        SafeAsyncTask<Params, Progress, Result> {

    private final int dialogId;

    /**
     * Creates an instance of DialogBasedAsyncTask.
     * 
     * @param dialogId progress dialog id being show on task executing
     * @param activity activity the task is attached to
     */
    public DialogBasedAsyncTask(int dialogId, Activity activity) {
        super(activity);
        this.dialogId = dialogId;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        if (activity != null) {
            activity.showDialog(dialogId);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void onPostExecute(AsyncTaskResult<Result> result) {
        if (activity != null) {
            activity.removeDialog(dialogId);
        } else {
            Log.w(TAG, "Task finished while no activity was attached.");
        }
        super.onPostExecute(result);
    };

    /**
     * {@inheritDoc}
     */
    @Override
    protected final void onActivityAttached() {
        activity.showDialog(dialogId);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected final void onActivityDetached() {
        activity.removeDialog(dialogId);
    }
}
